Question

Halogens form halogen acids, HF is the weakest among all of them. This is due to the reason that:

a) Flourine is a very small sized atom
b) Flourine is highly electronegative atom
c) There is a strong hydrogen bonding in hydrogen fluoride
d) the polarity of hydrogen fluoride bond is less​

Answer 1

Answer:

It may seem counterintuitive to say that HF is the weakest hydrohalic acid because fluorine has the highest electronegativity. However, the H-F bond is very strong; if the H-X bond is strong, the resulting acid is weak. A strong bond is determined by a short bond length and a large bond dissociation energy.

Explanation:

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